a Wages do not include supplements to wages and salaries such as pension, profit-sharing, and other retirement plans, and health, life, and unemployment insurance compensation.

b The data in this table have been revised as a result of the Bureau of Economic Analysis' comprehensive revision of the National Income and Product Accounts (NIPA).

c Establishments furnishing services incidental to transportation, such as forwarding and packing services and the arrangement of passenger and freight transportation.

NOTE

The Bureau of Economic Analysis provides these data on a SIC basis ending in 2000 and on a North American Industry Classification System (NAICS) basis beginning in 1998 (see table 3-23b for data based on NAICS).

SOURCE

1960-2000: U.S. Department of Commerce, Bureau of Economic Analysis, National Income and Products Accounts, tables 6.3b and 6.3c, Internet site http://www.bea.doc.gov/bea/dn1.htm as of Feb. 17, 2004.